Project description

An RDF description of the catalog itself and its datasets and
distributions is available.

The contents of all metadata fields that are held in the catalog, and
that contain data about the catalog itself and its dataset and
distributions, are included in this RDF description, expressed using the
appropriate classes and properties from DCAT, except where no such class
or property exists.

All classes and properties defined in DCAT are used in a way consistent
with the semantics declared in this specification.

The recommendation also defines a DCAT profile which “is a specification
for data catalogs that adds additional constraints to DCAT. A data catalog that
conforms to the profile also conforms to DCAT. Additional constraints in a
profile may include:

A minimum set of required metadata fields

Classes and properties for additional metadata fields not covered in DCAT

Controlled vocabularies or URI sets as acceptable values for properties